FDHD

AcronymDefinition
FDHDFloppy Drive High Density
References in periodicals archive ?
The basic Macintosh IIx system with 4MB (expandable to 8MB), the FDHD, a mouse, System 6.0.2, HyperCard and all documentation is priced at $7,769.
A 1.44MB Floppy Disk Drive Upgrade Kit lets a Mac II user add an FDHD either as a replacement for the 800K drive or as a second drive.
Finally, by replacing the logic board and adding the FDHD kit, a Mac II customer can achieve full system equivalence with the Macintosh IIx.